Home / 23,311.40-34,967.10-20,978.60

Finding the Fourth Proportional to 23,311.40, 34,967.10 and 20,978.60

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Solution

The fourth proportional to 23,311.40, 34,967.10 and 20,978.60 is: 31,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,311.40 : 34,967.10 = 20,978.60 : x
  2. Step 2: Convert to fraction form
    23,311.40/34,967.10 = 20,978.60/x
  3. Step 3: Cross multiply
    23,311.40x = 34,967.10 × 20,978.60
  4. Step 4: Simplify right side
    23,311.40x = 733,560,804.06
  5. Step 5: Solve for x
    x = 733,560,804.06/23,311.40
  6. Step 6: Final answer
    x = 31,467.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.